A 480 kg concrete table needs to be supported at thefour corners by compressed-air cylinders. Each cylinderis 20 cm in diameter and has a 1.20 m initial lengthwhen the pressure inside is 1.0 atm. A hoist lowers thetable very slowly, compressing the cylinders whileallowing them to stay in thermal equilibrium with theirsurroundings.Part AHow much work has been done on the gas of the four cylinders when the table reaches its equilibrium position?Express your answer with the appropriate units.HẢW = 4600PaSubmitPrevious Answers Request AnswerX Incorrect; Try Again; 4 attempts remaining

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Answered: A 480 kg concrete table needs to be…

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter3: The First Law Of Thermodynamics

Section: Chapter Questions

Problem 82AP: Steam to drive an old-fashioned steam locomotive is supplied at a constant gauge pressure of 1.75106...

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A car tile contains 0.0380 m3 of air at a pressure of 2.20105 Pa (about 32 psi). How much more internal energy does this gas have than the same volume has at zero gauge pressure (which is equivalent to normal atmospheric pressure)?
An ideal gas expands quasi-statically to three times its original volume. Which process requires more work from the gas, an isothermal process or an isobaric one? Determine the ratio of the work done in processes.
Consider a cylinder with a movable piston containing n moles of an ideal gas. The entire apparatus is immersed in a constant temperature bath of temperature T kelvin. The piston is then pushed slowly so that pressure of the gas changes quasi-statically from p1 to p2 at constant temperature T. Find the work done by the gas in terms of n, R T, p1 , and p2 .
A cylinder containing three moles of a monatomic ideal gas is heated at a constant pressure of 2 atm. The temperature of the gas changes from 300 K to 350 K as a result of the expansion. Find work done (a) on the gas; and (b) by the gas.
In a quasi-static isobaric expansion, 500 J of work are done by the gas. The gas pressure is 0.80 atm and it was originally at 20.0 L. If the internal energy of the gas increased by 80 J in the expansion, how much heat does the gas absorb?
Under what circumstances would you expect a gas to behave significantly differently than predicted by the ideal gas law?
When a gas expands isothermally, it does work. What is the source of energy needed to do this work?
Steam to drive an old-fashioned steam locomotive is supplied at a constant gauge pressure of 1.75106 N/m2 (about 250 psi) to a piston with a 0.200-m radius. (a) By calculating pv , find the work done by the steam when the piston moves 0.800 m. Note that this is the net work output, since gauge pressure is used. (b) Now find the amount of work by calculating the force exerted times the distance traveled. Is the answer the same as in part (a)?
A mole of an ideal gas at pressure 4.00 atm and temperature 298 K expands isothermally to double its volume. What is the work done by the gas?
A mole of ideal monatomic gas at 0 and 1.00 atm is warmed up to expand isobarically to triple its volume. How much heat is transferred during the process?
An ideal monatomic gas at 300 K expands adiabatically and reversibly to twice its volume. What is its final temperature?
One might think that the internal energy of diatomic gases is given by Eint=5RT/2 . Do diatomic gases near room temperature have more or less internal energy than that? Hint: Their internal energy includes the total energy added in raising the temperature from the boiling point (very low) to room temperature.

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